Chamfering-machine



UNITED STATES' PAT-ENT OFFICE. v

THOMAS CRANEY, OF BAY CITY, MICHIGAN.

CHAMFERlNc-'MAcHlNE- SPECIFICATION forming part bf Letters PatentNo.524,se9,eated August ai, 1894.

Application led November 4, 1893.11` Serial No. 490,025. (No model.)

To all whom it may concern:

Be it known that I, THOMAS CRANEY, a citizen of theUnited States,residing at Bay City, in the county of Bay and `State of Michigan,

have invented certain new and useful Improvements in., ChamferingMachines,` of which the following is a specification, reference beinghad therein to theaccompanying drawings.

`The invention consists in the peculiar construction of the feedingdevices, the construction and arrangement of the chamfering saws andtheir supports, the construction of the crozing saws, and further in thepeculiar construction, arrangement and combination of the various parts,all as more fully hereinafter described. j

In the drawings, Figure l is a side elevation of my improved machine.Fig. 2` is a plan thereof. Fig. 3 is a vertical, central, longitudinalsection. Fig. 4 is a cross section on line a: a', Fig. 2. Fig. 5 is aperspective view of a portion of the cutting edge of one of the crozingcutters. therethrough. y

A is the frame of suitable construction to support the operating parts.

B are channel bars supported on top of the frame and forming the supportfor the work as itis fed through the machine. These bars are laterallyadjustable upon the cross bars by means of clamping bolts'B engaging theslots B2 therein (Fig. 2)'.

C are carrier chains running in the grooves of the barsB and havingupwardly projecting lugs D extending above the top of the bars adaptedto engage behind the staves and feed them through the machine. Thesechains at their ends run over sprocket wheels E adj ustably secured onsuitable transverse shafts E', and are driven through the pulley F on Vthe shaft F', the worm F2 thereon engaging` the worm wheel FB on theshaft of one pair of sprocket wheels, Fig. 1.

At the front end of the machine is a work table or work support,preferably formed by the bars G secured one at each side of the bars B.

His a cross-bar having barrels H in which 5o are secured thespringlatches H2 having front Fig. 6 is asection means of suitable slotsand clamping` bolts,

for work of varying thickness (see I', Fig. 3)..

J are side standards on the frame connected l by the cross-bars J ateach end and centrally by the cross-bar J2. On the cross bars J arebarrels K having screw-threaded plugs K at their upper ends adapted tobear upon springs L which are sleeved about the pins or i standards L atthe ends of presser bars M, 7o one presser bar on each side of eachcarrier chain, as shown in Fig. 4, extending beneath the cross bar J2.These presser bars are laterally adjustable upon the cross-bars J andare secured in their adj usted positions by set screws J 3. Y

M are forwardly extending horizontal arms formed integral with thecross-bar J2 having boxes M2 at their outer ends in which is jour-4naled the mandrel N of the cutting off saws 8o N one at each endthereof. Upon the opposite side of the cross-head J 2 are the bracketsvO having a vertical adjustment by means of the screw shafts O whichengage screwthreaded bearings in the top of the cross-bar J2 and areprovided with suitable hand Wheels for actuating the same.

O2 are clamping bolts engaging slotsin the brackets and passing throughthe cross-bar for clamping the brackets in their adjusted 9o position.These brackets are provided with horizontally extending arms P in theouter ends of which are boxes in which is journaled the mandrel P whichat its outer ends carry the crozing saws P2. These crozing saws are madeof two saw disks a b provided with a` series of teeth c, the teeth ofone saw being arranged opposite the interdental spaces of the other sawand each tooth having the chamfered I.cutting edge d, which cuts ashearing xoc cut by arranging the outer point e in advance of the innerpoint fforming the rearwardly inclined face g which throws the saw-dustbetween the teeth, thereby maintaining them clear and free at all times.

Q is a cross-bar beneath the table, vertically, adjustably supportedupon the frame, by means of the clamping bolts Q engaged in verticalslots Q2 and adapted to be moved by means of the adjusting screws Q3.

R are yoke shaped frames having boxes R at the ends in which arejournaled the mandrels R2on which are secured the chamfering saws R3.These yokes are centrally provided with segmental slots S with whichclamping bolts S' engage, these clamping bolts passing throughhorizontal slots S2 in the cross-bar Q. This construction of partsenables me to adj ust the chamferin g saws to the proper height, byadjusting the cross-bar Q vertically, and to adjust these saws inand outfor different lengths of staves by adj usting the yokes upon the crossbars by means of the clamping bolts S' in the slots S2, and to adjustthe yokes to bring the saws to the proper angularity by means of thesegmental slots S.

The parts being thus constructed their operation is as follows: Theoperator places a number of slats on the table Gwith their ends abuttingagainst the gage board T and feeds them over. the edge of the table uponthe gage bars I where each successive projection D of the carrier chainwill engage on the rear edge of a single stave, forcing it beneath thespring latch H2. After passing which it will rest u pon the top of thechannel bars. The stave is brought in proper relation to the saws byengagement of its end against the inclined adjustable guide bar T',against which itis forced by means ot' the adjustable spring arm Uwhichbears against the opposite end. Motion is communicated to the sawmandrel by means of belts driven from any suitable source of power, andas the blank passes through the machinebeneath the presser feet it isrst cut otf to length by the cutting saws N', next chamfered by thechamfering saws and finally grooved by the crozing saws and deliveredfrom the machine by the carrier.

What I claim as my invention is- 1. The combination of the frame,longitudinal bars laterally adjustably secured thereon, carrier chainsrunning in the grooves therein, a work table formed of bars secured tothe channel bars, gage strips vertically adjustably secured to saidchannel bars at the end of the table, and spring latches above said gagestrips, substantially as described.

2. The combination of the frame, the table having end board or fence T,the carrier, the adjustable inclined gage bar T at one side of thecarrier and the adjustable spring presser arm U at the opposite side,-substantia'lly as described.

3. The combination with the frame and the endless` carriers, of the sidestandards, the connecting bars J at opposite ends of the standards, thelaterally adjustable barrels K having screw plugs K at their upper ends,the presser bars M, the standards L on the bars M extending into thebarrels, the springs L on the standards L their upper edges engaging theplugs K', and the set screws .T3011 the barrels Iengaging the connectingbars J for retaining the barrels in their adjusted positions,substantially as described.

4. In a stave machine, the combination ot a frame, a carrier, sidestandards on the frame, a cross bar connecting said standard centrallyabove the carrier, rigid forwardly extending brackets having boxes attheir outer ends, a mandrel journaled therein, having cutting off sawsyat the ends, brackets extending rearwardly from said cross bar, meansfor vertically adjusting the rear brackets, a mandrel journaled in boxesat the outer ends of said brackets, and crozing saws on said mandrels,A

substantiallyras described.

In testimony whereof I affix my sgnatu re in 1 presence of twowitnesses.

THOMAS CRANEY.

Witnesses:

M. B. ODOGHERTY, O. F. BARTHEL.

